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HISTORY OF INVENTIONS AND DISCOVERIES
 
 
Prehistory
     The dawn of discovery
     Needle and thread
     Bow and arrow
     Making fire
     Felt rugs and rush matting

From 8000 BC
From 3000 BC
6th century BC
Greece
Middle Ages
15th - 16th century
17th century
18th century
19th century
20th century
To be completed



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The dawn of discovery

A long slow sequence of invention and discovery has made possible the familiar details of our everyday lives. Mankind's programme of improvements has been erratic and unpredictable. But good ideas are rarely forgotten. They are borrowed and copied and spread more widely, in an accelerating process which makes the luxuries of one age the necessities of the next.

The story is a disjointed one, since inventions and discoveries occur in a random fashion. They are described here in an approximately chronological sequence.
 



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Two million years of stone technology represent the first long era of discovery at the start of human history. The use of fire, more than 500,000 years ago, is also a discovery. And some Stone Age artefacts (such as winged arrow-heads to stick in the flesh of the prey, or hooks carved in bone) have almost the quality of inventions. But these are developments of such an extended nature that they seem different in kind from the discoveries and inventions of more recent history.

Perhaps the first two ideas worthy of the name of 'invention', even though invented many times in many different places, are the eye of a needle and the string of a bow.
 

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Needle and thread: from 15,000 years ago

In districts where warm clothing is necessary, Stone Age people stitch skins together with threads of tendon or leather thongs. For each stitch they bore a hole and then hook the thread through it.

The development of a bone or ivory needle, with an eye, speeds up the process immeasurably. The hole is now created by the same implement which then pulls the thread through, in an almost continuous movement. Needles of this kind have been found in caves in Europe from the late palaeolithic period, about 15,000 years ago. Several are so thin as to imply the use of materials such as horsehair for the thread.
 



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The bow and arrow: from 15,000 years ago

The sudden release of stored energy, when a forcibly bent strip of wood is allowed to snap back into its natural shape, is more rapid and therefore more powerful than any impulse of which human muscles are capable - yet human muscles, at a slower rate, have the strength to bend the strip of wood.

The principle of the bow is discovered about 15,000 years ago. Bows and arrows feature from that time, no doubt both in hunting and warfare, in the regions of north Africa and southern Europe. The wood is usually ewe or elm. Stone Age technology is capable of producing sharp flint points for the arrows, often with barbs to secure them in the victim's flesh.
 



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Making fire: more than 10,000 years ago

At some unknown time, before the beginning of settled life in the Neolithic Revolution, humans learn how to make fire. No doubt the discovery happens at many different times in many different places over a very long period. The knowledge of how to create a spark, and to nurture it until it develops into a flame, is an intrinsic skill of human society.

Almost without exception Stone Age tribes, surviving into modern times, have evolved in isolation their own methods of making fire. It is likely that the same was true when all humanity lived in the Stone Age.
 



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The most common way of making fire is by friction, using a fire drill. This consists of a stick of hard wood, pointed at one end, and a slab of softer wood with a hole in it. If the point is placed in the cavity and rapidly twirled (by rubbing between the palms, or by means of a bow string looped round and pulled back and forth), the softer wood begins to smoulder. Shreds of dry tinder, placed in the smouldering cavity, can be carefully blown into a flame.

Another more sophisticated technique involves flint and pyrite. Evidence of both methods is found in neolithic tombs.
 

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The useful quality of the naturally occurring mineral pyrite, or iron pyrites, is that it makes a spark if struck with a flint. If the spark is aimed into dry tinder, blowing can achieve a flame.

With the introduction of iron, it is discovered that the same principle applies between flint and steel. This eventually becomes the standard method of making fire. The European tinderbox of the 16th century is a portable fire-making kit, consisting of flint, steel, tinder to catch the spark and a match (like the wick of a lamp) to hold the fire in a steady and lasting glow. Not until the 19th century is this equipment replaced by matches in the modern sense.
 

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However ingenious such methods of creating spark and flame, the process is laborious and in certain weather conditions impossible. Conserving fire, rather than making it, remains until modern times the practical approach to this most useful and dangerous of mankind's allies.

This important priority of domestic life is reflected in Rome's Vestal virgins, priestesses of great prestige and sanctity whose only ritual task is tending a flame.
 

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Felt rugs and rush matting: 25,000 to 6000 years ago

Whether living in caves or temporary shelters, hunter-gatherers of the distant past make the ground more pleasant by strewing it with rushes or similar material. The first rugs, of a kind which can be lifted and used elsewhere, are probably of felt, made from the bark of trees. Felt rugs of this kind may have been used in the late Palaeolithic period, about 25,000 years ago.

The development of weaving, in the form of basketry, allows for the plaiting of rushes as a floor covering. This too may well begin in Palaeolithic times. But the first archaeological traces of plaited rushes on the floor date from no earlier than about 4000 BC, in Mesopotamia.
 



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